PLEASE HELP ME! I’m begging you please

Answer:
1. 456.75 4567.5
2. 0.98 0.098
3. 2.4
4. 12,300
5. 809.200
6. 0.13
7. 42,608
8. 18
9. 280
10. 23
11. 950
12. 0.26
13. 9,500
14. 6.4
15. 280 3.06 0.2
16. 0.086 8,620 3.624